Financial capital prevailed over industrial because of their high profit margins and the fluidity of their capital. Industrial can't do that because naturally production require huge investment, time required and logistical effort. All the things in Capital (1st and 3rd volume iirc)

But they still try, as the Redtea mentioned, that's why in USA for the colossal amount of money spent you get insufferably bloated research projects like the Zumwalt or F35 that often also end in failure, and comparably to expectations and general bugdet, not much actual production of mundane things like munitions.

In a way, US MIC is operating like in the old mercenary philosophy "God, give us 100 years of war but no battles"